The Big Data store components (Nodes) communicate between them. The components do not authenticate each other.

When deploying DPOD All-In-One appliance, all communication between the big data store components is done internally making the authentication between components less significant security wise.

When deploying DPOD in a distributed architecture we highly recommend restrict access to big data store components using network security components like firewall.

Encryption at Rest

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You may leverage the operating system (Red Hat Enterprise Linux) capabilities for handling encryption of data at rest based on , such as LUKS Disk Encryption.

The following links provide more information on that topic:

• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/sec-encryption

• https://www.redhat.com/sysadmin/disk-encryption-luks

• https://

  opendistro

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  github.io/for-elasticsearch-

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  #encryption-at-rest

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Please make sure to use XFS file system where required to match the product prerequisites.